Where is the HP battery part number?
On the battery label itself (codes like HT03XL or HSTNN-LB7J) or on the bottom of the laptop. That code is the most reliable way to match an HP replacement battery.
HP uses several different battery part numbers across Pavilion, ProBook, EliteBook, Omen and the 15s range, so two HP laptops that look similar can need completely different batteries. Always match the HP part number (for example HT03XL, KI04, or HSTNN-series codes) and the voltage printed on your old battery.
These HP batteries are listed with capacity and voltage so you can confirm the fit before buying. If you are unsure, send us the HP part number or the laptop model from the bottom sticker and we will confirm compatibility before packing.

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On the battery label itself (codes like HT03XL or HSTNN-LB7J) or on the bottom of the laptop. That code is the most reliable way to match an HP replacement battery.
Yes, when it matches your HP model’s voltage, capacity range and connector. Compatible HP batteries are a common, lower-cost alternative to OEM and carry a replacement warranty.
Flip the laptop over or remove the old battery and read the part number and voltage printed on it (for example, a code like “HSTNN-LB7J” with “11.55V 41Wh”). Match that part number, voltage and capacity to the listing. The laptop model number on the bottom sticker also helps narrow it down.
An original (OEM) battery is made or branded by the laptop manufacturer. A compatible battery is built to the same voltage, capacity, connector and shape and works the same way, usually at a lower price. Both are fine as long as the voltage and part number match your laptop.
No. A higher-capacity battery at the same voltage simply lasts longer per charge. What you must never change is the voltage. A different voltage can fail to charge or harm the laptop.
Yes. Replacement batteries carry a replacement warranty (commonly 6 months); the exact term is shown on each product page along with the DOA (dead-on-arrival) support window.